Transmission-gear.



PATBNTND JAN. s, 1907.

c. H. BROOKS.

TRANSMISSION GEAR'.

APPLICATION FILED MAB.. 30, 1906.

3 SHEETS-SHEET 1.

PATENTBD JAN. a, 1907.

c, VH. B ROOKS.- 4TRAAWSMISSIOAI GEAR.:

APPLICATION Hun-MAB. 3019Q6. Y. 3 SHEETS-SHEET 2.

m N E V m PATENTED JAN. 8, 1907.\

G. H. BROOKS. TRANSMISSION GEAR. APPLIOATIoN FILED MAB. so. 190s.

s'snnn'rs-SHEBT s.

IIA llll WITNSSES.' O

l and to provide means' whereby shouldl the- NITED STATES PATENT OFFIOE..

, -OHARLES H. BROOKS; OF DETROIT, MICHIGAN. AssIGNOR TO'THE BROOKS MOTOR COMPANY, or DETROlT, MIOmGAN, A CORPO-- RATIQN OF MICHIGAN.

TnANsmssmN-EAn.

lSpecification of Letters Patent.

Patented Jan. 8, 1907.

i Appunti@ mea umh so. 190e. serai 1n. soassa.

To au `whom t may con/cern.' Be it known that I, 4CHARLES H. BROOKS, a

citizen of the United States of America, re-

siding at Detroit,' in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Transmission-Gears, of which the-following is a specication, reference being had therein to the accompanying drawings.

This invention relates to speed-changing same with new and efficient ing the gears bythe moyement of one lever I' shifting of the gears beprevented, by reason of their failure to at once comelinto .mesh or from .some Vother cause, a sufiiclent further movement ,of-the leverwill be permitted to release the clutch andthe gears will be in- ,stantly'thrown into` mesh by said means proper alinement of the gears.

construct the device that the clutch may be released at any time and heldin that position independently of the shifting mechanism or the position of the gears without the necessity of shifting said gears or altering their relation or position,

having the several advantages of the particular construction, arrangement, and combi-- nation of parts, all as hereinafter more fully described, reference being had to the accompanying drawings, in which- Figure Fig. 2, a side elevation of the same with parts broken away to show the construction. Fig. 3 is a transverse vertical section on the line of Fig. 1, drawnvto a smaller scale; Fig. 4, a similar section on the line y y of Fig. 1.I Fig. 5 is a sectional detail of the shafts and thrust-bearing, and Fig. 6 is a sectional detail of the yielding connection between the shifting rod and forked shifting, arm.

As shown in the drawings, shaft, mounted in suitable bearings in the crank-case 2 of a double op osed motor, said' crank-case being formed integral with the improvements in vj power-,transmission gearing' of the class known as sliding-gear transmissions ,and theobject ofthe invention is to provide the mechanism for releasing the clutch and shiftbushing and to provide a device 1 is a longitudinal horizontal sec-- tionof a device embodying the invention;

1 is the crankbearings in the casing in axial alinement with the crank-shaft, and 5 is a driving-shaft conlower half of the casing 3 for the 'power-trans-y nected to the end of the crank-shaft by a friction-clutch 6. A reduced end 7 of the crank-shaft projects into the en'd of the tubular portion 8 9 between, 'and the bearing end of of the driving-shaft with a said driving-shaftprojects into the opposite Y and rigidly keyed therein, said driving-shaft being thus made in two parts for convenience -in manufacturing. ported in a suitable babbitted bearing 10 on the easing, and it is axially bored mward from its rear end to receive a reducedendof the driven shaft and form `a bearing therefor. A small axial bore 11 in said end extends therethrough to conduct oil inserted in the tubular portion of the, shaft through an oilhole 12 thereln to the bearing for the reduced end of the driven shaft.

The clutch 6 consists of a facing-disk 13, secured upon the forward end of the tubular Said bearing end is sup-f end of the tubular .portion and is securely portion 8' of the drivin shaft, and an oppsedfaoing-disk 14, wit a series of friction.- 'sks 15 and 16 between,the disks 15 lbeing attached to the shaft to turn therewith and slide longitudinally thereof and the disks 16 being of greater difnneter and formed with notches in their peripheries to receive' the ends of a yoke 17:, whlch is rigidly secured to the crank-shaft of the engine to cause said disks 16 to turn with.. said-cr'ank-shaft. On

the back of. the facing-disk 14 is a longitudinally-extending sleeve'1'8, and sleeved upon the driving-shaft within this sleeve, between said disk and a collar 19 on 'said shaft, is a heavy coiled spring 20,. which normally exertsa force to move the facing-disk 14 'toward vthe facing-disk 13l and clamp the friction-disks between.

p'On the rear end lU of the sleeve 18 is ounted a ring'21,'with balls interposed tween the sleeve and ring to turn freely, and a ring-yoke 22 embraces said-ring and is pivotally attached thereto at veach side by pivotbolts passing through the yoke and enV aging seats in the ring. Between upward y-exbej- 'i tendin Eears 'onthefuper sideof the yoke is journa ed a roll 23, an a similar roll is journaled between .downwardly-extending ears on thel yokeat its lower side. 'Anadjusting- `pin 24 is pivotallyattachedat-one end to the ears on the upper. side of the yoke and slides Within a Abearing provided therefor'in the casing, the opposite end of said pin being screw-threaded to receive an adjusting-nut, which 1may'be adjusted to'limit the inward movement of said pin, the same being free to slide outward in its bearing'when the yoke is rocked by the engagement of acam with the friction-'roll v23, said'cam" being 'secured upon a transverse shaft'26,'mounted`in`bearings inthenpper part of the casing and provided Withanl perating-leverl27ywhich may be connected With'a hand or foot lever in any desired manner. e 1

Mounted inbearin'gs in the-casing and-ex- 'tendin across the sameadjacent to the-ears Aon the" ower's'ideftheyoke 21is a shaft28, upon which `is secured a'nothed Wheel or "cam`29,^consistin'g f a wheeler-diskl formed 2 5- with the fourdeepnotches`30, 31, '32,1 and133 to 1eceive the friction-M1123 ,carried by the "Formed-uponthe -bearing'end of the 'driv- "ing-shaft"5 isa. gear 34, havinga longface, 3o" and'upon the adjacent squared portion 35 of the 'driven' -1 lshaft lis mounted a "ge-ar '-36 -to slidefreely thereon, -said "gear being" formed withinternal teeth 37 tti-engagethe-gear 34, :and thus When said" ar isy in the `position '.showninFig.` 1 thedrlving anddrivenshafts 'are locked :together Aby saidlgearlv to: turnat the same speeds.

A' counter-shaft 38 is 'mounted in bearings the casing' and extends parallel Wi't'lfthe 4o driven' 'shaftyaiid-on' this counterishaft-is-se 'cured a''geafin'meshitfitli"tl1e"g-ear*345 to "transmitm'otion vlfrom *tha-driving tothe 'counter'shaft "Secured Aupon the countershaft at 'a distance from -`the 'gear' 39-is a 'smaller'gear or'pinion40, adapted vtolbe'en- 'gaged' 'by the external'iteeth of thel sliding' gear -36 Whensaid gear is moved along-fits j'slraft. and out ef'enga ement-with "the gear 34, so that"n1`otion'wil 'then-be transmitted 5o"from the x driving-shaft through fthe large pinion 41 'is secured 'u en *the yeeunter-"shfft 55 at a shortfd'ista'nee'toJ lie-Tear bf 'the-pinion "40, and` aniidler '424s mounted upon: astubshaft on the casing in meshvvi'th saidpini'on l and thus in this v -'cluteh. "The 'clutch is" thus." released they' should"mesh andf= should`A said sition .of fthe gear the driven shaft Will re vdisconnected and no motion will be transmitted thereto.

`Secured upon the transverse shaft 28 near v one side of the casing is a pinion43 and sliding in suitable bearings inthe casing is a rack-bar 44 in engagement with said plnion,

-=afr0d45*being secured to one end of said rack and extended outward through a hearing inthe end of the casing for the attachment of an operating-lever, by means of which the rack may be shifted longitudinally. Mounted upon said rod 45 is a forked arm 46, the forked end of which is engaged `v'vith a vgroove inthe hub of theA shiftinggear '86,so thatwhen the rack-bar is moved the'elid'ing *gearwill be `moved-at thesame time. 'This 'movement of the 'rack-bar turns the transverse shaft 28 -and Vrevolves `the notched `Wheel 29, the'roll 23`bein-g thus forced outef its 'noteh'and'the yoke 21 turned -uponits pivotal connection-With` the pin 24- against the-action Af 'the spring '20, releasing the to Idis- 'connect the :driving-'shaft "from the crankshaft-upon 'the first movementof the shifting "rod 45 andbfore the-= sliding gear has'been VshiftedV into `or out ofvenga ement-with the Ietherfgeara `and thus the 4liability'l of i strip- 'ping'the teeth'from the 'gears `by bringing them intox mesh While* being ldriven- Lis `obvi- 1 ated. When the shifting 'gear-isdn the pesi- =tion'shown in'iFigJ 1, the-woll 23 --isiny't'he "notchf30,and\when the shifting rod-ismoved the"notchd=-wheel will' beturned--and-said "rollwill? engage the next notch" 3 1 at vwhich time' the slidingrgearwill be 'out (if-engage- Vvmentwitli'both 'the 'gear134 and* inion- 40, in

'action of 'fthe 1 spring "20 lagainst-accidental shifting. drlFurther movement of theshifting "rod slides thefgear--intoI engagement withnthe pinion 40 and turns =the`wheelto engage its noteh32 'with the roll, andastill further shifting of therodl engages the -gear withfthe 'idler and'ffturns thezwneel to engage' Ithe notch -I 33 with the' roll. y

i If* when' 'fthe slidingfgear-issh'iftedits teeth should abut vthose 1 of the-3gear\-with =whieh ars be standing still, owing "-to the fact'- t at'ffthe 4clutelihas been thrownfout-by the shifting a further -movement fof theJ shifting 1rodsubli- 'eient to fturnl thenotchedwheel-far enough to '-pennjtthe' elutch to o erateyand thus .turn fthefgearsyisfpermittedy y-pro`viding a-yilelding -connecticnf or" limited-relative movement `between' the shiftingmrodandi/forked wrm. vThis'eennec'tion consists in'ffforminguthef .arm with tWobearing-eyes 47;-tl1roi1'gh'-fwhelt'rt-he fshifting' rod extends and-sleeved .rupon'l the Ted `Abetween thes eyes 4 fare1-tWoJ *sleeves-'1148 65 external teeth will engage the said pinion,

r"gitu'din'alslots-60 'are ffermedfin therodynd' 1n each of these slots is a transverse pin 51,

IOO

IIO

e aged at their ends by the sleeves. \i l`he co1 e spring thus exerts a force to normally hold the pins yin the opposite ends of their slots; but when the arm is prevented from moving .in either direction by the failure of nection.

By moving the lever 2l? to throw the cam 25 the yoke is turned up the roll 23, engaging the notched wheel as its fulcrum, and the clutch is released at any time independently of the transmission-gearing and without the necessity of operating the shifting rod.

When the yoke 22 is moved to release the clutch,y a heavy end `thrust is put. upon the thrust-'bearing is provided on said 'shaft at the ,forward end of the bearing 10, consisting of a face-ring 52, placed a amst the end of said bearing, in contact which ning the vballs. 53-runand are held by the retaining'- ring 54. A face-ring 55, held by pins 56 to turn with the shaft, engages the balls at the oppositeside and a collar 57, screw-threaded upon the shaft, engages -said ring 55 to hold the same in' place.

. l Having thusfully described my invention,

what I claim. is 1. In a vtransmission-gearing, the comblnation with a power-shaft, of .a driving-shaft,.

a clutch to connect 'the power and driving shafts, -a driven "shaft, gearing for transmitting motionfativar'ious speeds from the driving to the driven shaft, a shifting arm to operate said gearing to change the speed, means for operating the, clutch, and means connecting said arm and clutch-operating means to j operate oneby the movement of the other and .to permit aflim'ited relative movement be- .tween the same:

' 2. In a transmission-gearing, the combi nation with adriving and a driven shaft, of a clutch, gearing for transmitting motion at various speeds from the driving to the driven shaft,- a shifting arm to operate the gearing to change the speed', a rod for operatlng the clutch, anda yielding connection/between "the arm and rod adapted to normally hold the arm tomovewith the rod and to yield to permit a limited movement of the rod relative to the arm.

13.' In a transmission-gearing, the combi-k nation' with i a power-shaft, a driving-shaft, and a driven shaft, of a 'clutch 'to connecttheV power' and drivingishafts, gearing provided with a sliding gear for transmitting motion at various s eeds from thei'drivin to the driven.

shaft, a ongitudinally-movab e rod to o erate the clutch, an arm to shift the sli ing gear having eyes through which the rod eX- tends, and means for ylclclingly holding `the arm upon the rod to permit it to move longitudinally therein a limited distance.

4. In a transmission-gearing, the combination with a power-shaft, a driving-shaft, and a driven shaft, of a clutch to connect the power and driving shafts, gearing provided .sprin sleeved on the rod between the pins,

to ho d the same in the outer ends of the slots.

5. In a transmission-gearing, Athe combination with a power-shaft, a driving-,shaft power and driving shafts, gearing for transmitting motion from the driving to the driven shaft embodying a sliding gear adapted to be moved into various rious speeds, a whee provided with notches corresponding to the several operative positions of thesliding gear, a `lever to move and osition to transmit vaand a driven shaft, of a clutch to connect the driving-shaft, and to take-this end thrust a release the clutch adapted to be operated by said notched wheel, and means for simultaneously moving'the sliding gear and turning the said notched wheel. 6. In a transmission-gearing, the combiv nation with a power-shaft, a driving-shaft and a4 driven shaft, of a clutch to connect the power and driving shafts,v gearing for transmitting motion from the driving tothe driven shaft provided with a sliding gear to var v the speed, a yoke pivotally attached to the clutch to move the same and provided with a 4friction-roll, a wheel to engage the roll formed with notches to receive the same, and a longitudinally-movable rod to turn the wheel and shift the sliding gear.

7. In a transmission-gearing, the combination with a power-shaft, a driving-shaft, and a driven shaft, of a clutch to connect the power and driving shafts, gearing for transmitting motion from the driving to the driven shaft provided with a sliding gear to vary the speed, a yoke pivotally attached to the clutch to movethe same, alongitudinally-movable rod to shift the sliding gear, means operated by said rod to engage th'e yoke`at one side of the clutch andmove the same, and a'fcam at the opposite side of said yoke to` engage and move the same independentlyof said means.

y 8. .In a transmission-gearing, the combination with a power-shaft, a driving-shaft,

landa driven shaft, of-'av clutchto connectth'e power and ldriving shafts, gearing fortrans-l mitting motion fromthe driving to the driven IOO shaft provided with a sliding gear tovary the Wheel, a rack to operate said pinion, and

means movable with the rack for shifting the sliding gear. F I

9. In a transmission-gearing, the combination with the crank-shaft of la motor, of a driving-shaft and a driven shaft in axial alinement withthe crank-shaft, a clutch to connect the crank-shaft and the drivingshaft consisting of a facing-.disk secured on the driving-shaft, a facing-disk movable toward and from said disk, a series of friction-u disks connected to the driving-shaft to turn therewith, a yoke secured to the crank-shaft, a series of friction-disks alternating with the other series of disks and engaging the yoke to turn with said crank-sh aft, and means for moving themovable facing-disk to clamp the friction-disks; a variable-speed -gearing consisting of a gear on the driving-shaft having a `long-face, a counter-shaft, a gear on the counter-shaft, a sliding gear on the driven shaftA having internal teeth tofeng-age the gearl on 'the driving-shaft and formedwith external teeth, and a pinion on the counter-shaft into mesh with which the sliding gear is adapted` to be moved; a longitudinally-movablerod;

an arm on said rod to shift the slidingvgear; and means for operating the clutch actuated by said rod.

10. .In a transmission-gearingthe combination with the crank-case and crank-shaft of'an engine, of a casing formed integral with the crank-casing, a driving-shaft having a tubular end to receive'the endof the crankshaft and anaxial bore at its opposite-end, a bearing inthef'casing for-said end of said shaft,a driven shaft engaging theboreof the driving-shaft at one end and a bearing in the end ofthe casing and formed with a s uare portion, a gear on the end of the driving-s aft,

a sliding gear on the squared'portion ofth'e' driven shaft having internal teethto engage the gear on thedriving-shaft and having external teeth, a 'counter-shaft mounted .in bearings on the easing, a gear on'thecountershaft in mesh with the gear on the drivingshaft, pinions on the counter-shaft one of which is adapt-ed to be engaged'b the external teeth of the'sliding gear, an id er-engaging the other pinion adapted to be engaged by saidexternal-teeth, afriction-cluteh on the tubularend of the-driving-shaft to connect the crank-shaft thereto, transverse shafts in the casing'adjacentto the-upper and lower sides of.- said clutch, a yoke for operating the clutch, means on said transverse shafts for operating the yoke, a pinion on one of said shafts,.a rack to engage andturn said pinion, a rod to actuate the rack, and an. arm on'the rod to move the sliding gear.

11. In .a transmission-gearing, the combination with. a crank-shaft and a crank-casing within which 'the same is mounted, of acasing formed integralwith the crank-casing, a driving-shaft mounted at one end in la bearing in the casing and formed tubular-to receive the end of the crank-shaft, a driven shaft having'a s uared portion, gearing for transmitting motion from the driving to the driven'shaft having a sliding gear-engaging the squared portion of the driven shaft, a

facing-disk on the forward end of the drivingshaft, an opposing facing-disk movable toward andfrom the first disk and provided with a rearwardly-extending sleeve, a yoke fixed on the crank-shaft, two-series of frictiondisks interposed between the facing-disks one series being connected to the drivingshaft-and the other to the yoke,-a collar on the driving-shaft, a spring sleeved on said shaft between said collar and movable facingdisk, a thrust-bearing on the driving-shaft bearing against the forward side of the bearing for said shaft, a yoke pivotally attached to the sleeve on the movable facing-disk, a transverse shaft extending across the casing adjacent to said yoke, a notched Wheel on said shaft to-engageand operate said oke,

Aand means for turning said shaft and shlfting :the sliding .gear .at the same time.

l2. In a transmission-gearing, the combination with la crank-shaft and crank-casing, of a casing formed integral with saidcrankcasing, adriving-shaft consisting of a tubular portion to receive the end of the 'crank-shaft and a bearingend having an axial bore, a

driven shaft' havingan end engaging the bore ofthe driving-shaft, a yoke secured to the crank-shaft, a facing-disk secured to the tubular end ofthe driving-shaft, a movable .facing-disk, friction-disks attached to the driving-shaft, friction-disks between said disks having not-ches in their peripheries en- IOS gaged by said yoke,-a sleeve on the movable facing-disk, a collar on the driving-shaft, a spring interposed between said collar and lmovable disk, a thrust-bearing between the collar and the bearing for the shaft,1 a ring on the sleeve of the movable disk, a yoke pivotally-attached to said ring and formed with upwardly-extending ears on its upper side and downwardly-extending ears on itslower side, rolls between said ears, an adjusting-pin pivotally attached to said ears at the upper side and movable in a bearing, an adjustingnut on said pin, a transverse shaft adjacent to the yoke at its upper side, a cam on said shaft to engage the roll, a lever onsaidshaft to operate the same, a transverse-shaft adjacent to the lower side of the yoke,a notched Wheel on said shaft` to engage the roll, apin- `ingly holding the arm frorn longitudinal l ion on said shaft, 'a longitudinally-movable movement on the rod. 1o

rack-bar` enga 'ng said pinion, a rod at# In testimony -Whereof I aix my signature taohed to said' ar, gearing for transmitting in presence of' two witnesses.'

motion from the driving to the driven shaft CHARLES H. BROOKS. havin a' sliding gear,` a forked arm engagingl Witnesses:

vthe hu of said sliding gear. and formed with OTTO F. BARTHEL,

eyes to receive the rod, `and means for yield- THOS. G. LONGSTAFF. 

